Amachinist with normal vision has a near point at 25 cm. this machinist wears +4.25-diopter eyeglasses in order to do very close work. with these eyeglasses, what is the near point of the machinist? assume that he wears the glasses extremely close to his eyes.

Explanation:

As we know that normal near point is given as

now the power of the lens used is

focal length of the lens will be

now we have

now plug in all values in it

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